I measure intervals without hands, I can be continuous without a face. What am I?

Category: Science · Difficulty: hard

Hint: Think about ways to quantify duration in scientific terms.

Answer

A time interval

Explanation

A time interval represents the measurement of time that can occur without a physical representation like a clock.

This is a hard science riddle — a tricky one that takes a little thought. The answer is A time interval.

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